Home / 725,188.73-1,000,788.29-398,515.52

Finding the Fourth Proportional to 725,188.73, 1,000,788.29 and 398,515.52

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Solution

The fourth proportional to 725,188.73, 1,000,788.29 and 398,515.52 is: 549,966.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,188.73 : 1,000,788.29 = 398,515.52 : x
  2. Step 2: Convert to fraction form
    725,188.73/1,000,788.29 = 398,515.52/x
  3. Step 3: Cross multiply
    725,188.73x = 1,000,788.29 × 398,515.52
  4. Step 4: Simplify right side
    725,188.73x = 398,829,658,802.74
  5. Step 5: Solve for x
    x = 398,829,658,802.74/725,188.73
  6. Step 6: Final answer
    x = 549,966.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.